Patent application title: BALL-JOINT SUPPORT IN THIN PARTS
Jose Maria Pina Lopez (Alcorcon, ES)
Enrique Vera Villares (Getafe, ES)
AIRBUS Operations S.L.
IPC8 Class: AF16C1106FI
Class name: Articulated members pivoted universal ball and socket
Publication date: 2012-07-05
Patent application number: 20120170971
The ball joints are embedded via the coaxial orifice thereof, centered on
a longitudinal shaft. The invention is characterized in that it comprises
a bush (1) in the inner space of which the ball joint (2) is embedded,
whilst, externally, this bush (1) is embedded in a cylindrical opening of
a thin piece (10), mechanical means for axial retention of the bush (1)
in both directions with respect to the thin piece (10) being included.
All the aforesaid allows a thin structure or piece to be connected
completely securely to a ball joint, thereby achieving a completely firm,
1. BALL-JOINT SUPPORT IN THIN PARTS, the ball-joint being inserted by its
coaxial orifice centered on a longitudinal axis, is characterized by
comprising a cap (1) inside which is inserted the ball-joint (2), while
externally the cap (1) is inserted into a cylindrical opening (9) of a
thin part (10), including mechanical means for axial retention in both
directions of the cap (1) with respect to the thin part (10).
2. BALL-JOINT SUPPORT IN THIN PARTS according to claim 1, characterized in that the mechanical means for axial retention of the cap (1) with respect to the thin part (10) consist of a rear end rib projection (11) which forms part of the cap (1) and against which one of the sides of the thin part (10) butts, axially retaining the cap in one direction, and a retaining nut (13) coupled on a front end threading (12) of the cap (1) which axially retains the cap in the other direction.
3. BALL-JOINT SUPPORT IN THIN PARTS according to claim 2, characterized in that in the axially retaining by means of the retaining nut (13), an intermediate washer (14) is placed that contacts with thin part (10) via one of its faces and via its opposed face with the retaining nut (13).
4. BALL-JOINT SUPPORT IN THIN PARTS, according to any of claim 2 or 3, characterized in that on at least one part of the contact surface of the cap (1) and thin part (10) there is an adhesive material (15) so that these two elements are joined together by this contact surface.
5. BALL-JOINT SUPPORT IN THIN PARTS, according to any of the previous claims, characterized in that the length of the cap (1) coincides with the length of an external part (7) of the ball-joint (2), external part (7) through which the ball-joint (2) is inserted into the inside of the cap (1).
OBJECT OF THE INVENTION
 As stated in the title of this descriptive specification, the present invention relates to a ball-joint support in thin parts which is for the purpose of connecting a ball-joint inserted into an axis to a thin part, which will be able to safely tip an angular space, whenever necessary, due to the attachment by means of the aforementioned ball-joint.
 Mention must be made of the improvement of the properties of the new materials which are currently being used (carbon fiber, glare, etc.) and the optimization of the designs for reducing the weight of the different airplanes and other aircraft and therefore reducing aspects including consumption, entailing a reduction in thicknesses of the different structures and parts.
 Therefore, the object of the invention is a characteristic ball-joint support, which makes possible to connect with complete security a part or structure of small thickness with a ball-joint, achieving a fully firm and solid union.
BACKGROUND OF THE INVENTION
 The trend in airplanes and other aircraft is currently the use of new materials reducing weight and therefore also a reduction of the thicknesses in the different parts.
 In these cases, in which the thickness of the parts it reduced, problems arise when ball joints are integrated into said parts of small thickness so that they can tip slightly when necessary, such that the ball joints will be inserted into respective axes.
 The problems arise essentially because the thickness of the parts which incorporate the ball joints is noticeably smaller than the length of the ball joint, as a result of which the seating of the aforesaid ball joint on the respective part is weak and unstable.
 In other cases, the thickness of the parts is adapted to the width of the ball joint seating, as a result of which there is very little reduction in weight.
DESCRIPTION OF THE INVENTION
 For the purpose of achieving the objectives and preventing the drawbacks mentioned in the preceding paragraphs, the invention proposes a ball-joint support in thin parts which is characterized by comprising a cap, inside of which a ball-joint is inserted, whilst externally said cap is inserted into a paired opening of the respective thin part manufactured from composite materials.
 The ball-joint is inserted in turn into a longitudinal axis.
 The cap is longer in length than the width of the thin part where it is inserted, such that the cap will be axially held in place mechanically with respect to the thin part.
 For this purpose, the cap has an annular end rib projection where it butts up against one of the sides of the thin part and a screw nut opposite said rib which screws into the other end segment of the cap, said screw nut butting up against the other paired side of the thin part, with a washer positioned in between.
 Another characteristic of the invention is that there is an adhesive material on the surface where the cap and the thin part are in contact so that these two elements are joined together by said contact surface and thus preventing the cap from turning.
 Thus, the characteristic cap is long enough to accommodate both the ball-joint as well as the screw nut and washer which assure the union.
 For a better comprehension of this specification and comprising an integral part thereof, some figures are attached hereto in which the object of the invention has been depicted for illustrative, non-limiting purposes.
BRIEF DESCRIPTION OF THE DRAWINGS
 FIG. 1. Shows an amplified perspective view of the ball-joint support in thin parts, the object of the invention.
 FIG. 2. Shows a cross-sectional view of the support of the invention in mounted position.
DESCRIPTION OF THE PREFERRED EMBODIMENT
 Taking into account the numbering adopted in the figures, the ball-joint support in thin parts is determined by a cap 1, into the inside of which a ball-joint 2 is inserted, this ball-joint being inserted, in turn, into a coaxial orifice 3 on a longitudinal axis 4.
 The ball-joint 2 is a conventional body and comprises mainly a first inside segment 5 longer in length which includes the aforesaid coaxial orifice 3 and a curved outer surface 6 where a second external part 7 shorter in length is complementarily attached, inserted into the aforementioned cap 1 which is of the same length as said external part 7.
 On the other hand, the cap 1 externally has a centered seat 8 for fitting into a cylindrical opening 9 of a thin part 10, a rear end rib projection 11 where the thin part 10 butts along one of its sides and front end threading 12 where a retaining nut 13 which butts against the other paired side of the thin part, with a washer 14 placed in between.
 On the other hand, on the contact surface between the cap 1 and the thin part 10, there is an adhesive material 15 so that these two elements are joined together by said contact surface and to thus prevent the cap from turning.
 This results in a firm and solid union of the ball-joint support on the thin part.
Patent applications by Enrique Vera Villares, Getafe ES
Patent applications by Jose Maria Pina Lopez, Alcorcon ES
Patent applications by AIRBUS Operations S.L.
Patent applications in class Universal ball and socket
Patent applications in all subclasses Universal ball and socket